#                                                                    -*-perl-*-
$description = "Test the -n option.\n";

$details = "Try various uses of -n and ensure they all give the correct results.\n";

open(MAKEFILE, "> $makefile");

# The Contents of the MAKEFILE ...

print MAKEFILE <<'EOMAKE';

final: intermediate ; echo >> $@
intermediate: orig ; echo >> $@

EOMAKE

close(MAKEFILE);

&touch('orig');

# TEST 0

&run_make_with_options($makefile, "", &get_logfile);
$answer = "echo >> intermediate\necho >> final\n";
&compare_output($answer, &get_logfile(1));

# TEST 1

&run_make_with_options($makefile, "-Worig -n", &get_logfile);
$answer = "echo >> intermediate\necho >> final\n";
&compare_output($answer, &get_logfile(1));

unlink('orig', 'intermediate', 'final');

# We consider the actual updated timestamp of targets with all
# recursive commands, even with -n.

$makefile2 = &get_tmpfile;

open(MAKEFILE, "> $makefile2");

print MAKEFILE <<'EOF';
.SUFFIXES:
BAR =     # nothing
FOO = +$(BAR)
a: b; echo > $@
b: c; $(FOO)
EOF

close(MAKEFILE);

&touch('b');
# Sometimes, on my Solaris 2.5.1 box with a NetApp filesystem NFS-mounted,
# just touching b first then a isn't good enough: the nsec field in the
# stat result shows b is _newer_ than a once every 5 or 6 tries!!!  I've
# no idea what this is about, but that's why there's a sleep(1) here...
sleep(1);
&touch('a');
sleep(1);
&touch('c');

# TEST 2

&run_make_with_options($makefile2, "", &get_logfile);
$answer = "$make_name: `a' is up to date.\n";
&compare_output($answer, &get_logfile(1));

# TEST 3

&run_make_with_options($makefile2, "-n", &get_logfile);
$answer = "$make_name: `a' is up to date.\n";
&compare_output($answer, &get_logfile(1));

unlink('a', 'b', 'c');

1;